Pole Position help and Virtual On Cyber Trooper help still

premac

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Pole Position help and Virtual On Cyber Trooper help still

Pole position is still giving me a garbled image with Ram 8 error, and still having trouble with my Virtual On cyber troopers, I keep checking power supply's and wiring, noticed fan not working, just cuts out on slave side graphics, still shows points and time left but rest of screen on slave side is light blue, does shoe how to use controls and shows other grapics just not the game part.

Still working on Hard drivin, g-loc, mario brothers, virtual fighting
 
>> Pole position is still giving me a garbled image with Ram 8 error

A picture is worth a thousand words... If you can post an image, that would help.

A RAM-8 error is 6116 used by the main Z-80 for general memory storage. I don't think it would impact video so you likely have two problems. It is also the RAM which is backed up to preserve high scores. Do you have corrosion damage from the old rechargeable battery which is on the board?

>> I keep checking power supply's and wiring,

Not sure which game you are referring to, but I can only help with Pole Position. What is the +5 voltage at the power supply and at one chip from both the CPU and video board. (I don't care which chip you test.)
 
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